This appears to be a bug. Based on everything I'm reading on how the OpenAPI specifications should be set the "produces" header should be set as the "Accept" header on any requests. Microsoft Flow does not do this.

As a work around you can specify a header parameter for "Accept" and then define that in my flow:

This appears to be a bug. Based on everything I'm reading on how the OpenAPI specifications should be set the "produces" header should be set as the "Accept" header on any requests. Microsoft Flow does not do this.

As a work around you can specify a header parameter for "Accept" and then define that in my flow: